W hipperling



.vu e nv h S w e e h S 2 G. N I L R E D.. P Il H W m. d o M 0 W MACHINE' TOR CUTTING BLANKS FROM TIN. No. 379,893.

NVE/V709.

E w o N@ Q1 -.r.. M

WIM/8858:

(No Model.) X A 2 Sheets-Sheet 2. W HIPPERLING.

MACHINE POR GUTTING BLANKS FROM TIN.V

Patented Mar. 20, 188

MTA/5555..

UNITED STATES PATENT OFFICE.

VlLLTAM HIPPERLING, OF NEW YORK, N. Y., ASSIGNOR TO STEPHEN A. GINNA, OF PLAINFIELD, NEV JERSEY, AND RICHARD A. DONALDSON,

OF BROOKLYN, NFV YORK.

MACHINE FOR CUTTING BLANKS FROM TIN.

SPECIFICATION forming part of Letters Patent No. 379,893, dated March 20, 1888.

Application filed December 5, 1887. Serial No. 256,991.

.To @ZZ whom t may concern,.-

Be it known that I, WILLIAM HIPPERLING, a citizenv of the United States, and a resident of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Machines for Cutting Blanks from Tin, of which the following is aspecication.

The invention relates to improvements in machinery for cutting blanks from sheet metal; and it consists in the combination of the wellknown die-press with mechanism having anintermittent movement for feeding thesheet metal to the dies, clamps for holding the sheets, and other' details, all as hereinafter described, and pointed out in the claims.

Referring to the accompanying drawings, Figure l is a back view of the usual die-press and machinery embodying myinvention; Fig. 2, a top View of same, all of the press except the female die being omitted; Fig. 3, an enlarged vertical section on the dotted line X X of Fig. 2; Fig. 4, an enlarged detached perspective View of aportion ofthe feeding-chain, one of the clamps (shown open) for holding the sheet of metal while being operated on by the press, and one end of au adjustable bar which closes said clamp'on the sheet at the proper time; Fig. 5, a vertical section on the dotted line Y Y of Fig. 4, showing said clamp closed on a sheet of tin, Fig. 6, a top view of the lower die of the press and plate along which the sheets of tin are carried by the chain; and Fig. 7 is an edge view of same, partly in section, on the dotted line Z Z of Fig. G.

ln the drawings, A designates the usual press, supported upon legs B B and having the female die C and punch D, the die C being arranged in an inclined position and the punch D being given its reciprocating motion by the usual eccentric secured on the shaft E,to which power may be applied through a belt, F, as shown in Fig. l.

Upon the bed-plate of the die C is secured,

by screws, if desired, the feed plate G, (see Figs. 2 and 6,) which is provided at one side of the press with the gage H, held in place by screws passing through the same and into the (No model.)

slots I cut in the plate G. The gage H will have one edge turned upward,formingashoul 5o der, J, against which the edge of the sheet of tin may rest, while the thickness of the gage at its front edge forms another shoulder, L, against which the edge of the tin may rest when desired. The purpose of the shoulders J L is to facilitate the feeding of the sheets of tin, and their mode of operation will be described hereinafter. The slots I enable the attendant to adjust the gage H upon the plate or table G according to the width of the sheets 6o of tin to be treated.

The endless chain is lettered M and is mounted upon the wheels N N, which are journaled between standards O O at opposite sides ofthe press A, as shown in Figs. l and 2, the

position ofthe wheels N N being such that the chain will travel along the bed of the press at the side of the die C opposite to that of the gage H, as shown in Figs. 2 and 3, in which it will be observed that a guide-plate, P, is pro- 7o which latter exert an upward tension on the 8o fingers V, so that their normal'position will be open, or that illustrated in Fig. 4.

The fingers T and V constitute clamps, and their purpose is to grip the upper edge of the sheets of' tin after they have been placed upon 85 the gage H andare to be fed through the press. The pivoted fingers V are caused to clamp upon the sheet of' tin, as shown in Fig. 5, by their upper curved portion coming into conta-ct with the under side of the pressure 9o bar a during the movement of the chain, the effect of' the bar being to turn the fingers downward on their pivots and in this position retain them until they successively pass from under the bar, when the springs W will again elevate the fingers V, thus releasing the sheet of tin. The upward movement of the fingers V is checked by their shoulder b striking the pins d. (See Fig. 4.) The ends of the bar a are turned upward, as shown, so as to facilitate the ingress and egress of the fingers V, and said bar is supported upon the rods e, which extend upward through and are vertically adjustable within sleeves f, formed on the upper ends of the standards g. The obo ject of having the bar a secured by means which permit of its adjustment is to enable the attendant to so regulate its contact with the flngersV that thelatter may be caused to firmly grip the varying thicknesses of material which may be fed to the press.

The chain M hasimparted to it an intermittent motion, so that as soon as one blank has been cut the sheet of tin may be fed sufficiently farther into the press to permit of the cutting of another blank, this operation being. repeatedl until the whole sheet of metal has been used. The chain is given its intermittent motion from the power-shaft E, as illustrated in Fig. l, through the medium of the crankwheel h, jointed rods t', bell-crank lever j, rods k Z, pawl m, secured to the rod Z, and the ratchet n, which is -keyed to the shaft of the Wheel N, carrying one portion of the chain. The rotation of the shaft E and crahkwheel h operates through the rods t' to rock the leverj, and this imparts a reciprocating motion to the rod 7c and an oscillating motion to the rod Z, which secures through the pawl m an intermittent rotary movement of the ratchet n and wheel N.

Upon the chain M (see Fig. 1) are also secured at regular distances apart the angleplates t, having the fingers w, which do not clamp the sheets of tin, but merely come into contact with their upper outer edge and 'aid in moving them through the press. The position of the plates ton the chain M will be regulated according to the length of the sheets of tin, it being desirable that they appear at each end of the sheet, as shown in Fig. l, (m

'xdenoting the tin,) in order that one sheet may follow another into the press in rapid succession.

m is a bar which supports the end of the sheet of tin as it leaves the press.

n the operation of the mechanism above described the sheet of tin is first placed on the table or plate G, its lower edge, for convenience, at this point resting against the shoulder J of the gage H and its upper outer edge being allowed to be caught by the finger w. The sheet is then moved upward on the inclined table or plate G until its lower edge falls against the shoulder L of the gage H and its upper edge is secured between. the fingers fr v. The Shoulders J L amiboth provided,

since the space between the fingers TV is slight, and it is thought that it might be difficult to at once insert the upper edge of the sheet of tin fairly between said fingers without first' resting the lower edge of the sheet against the shoulder J and then moving the sheet upward between the fingers until its lower edge fell against the shoulder L. The sheet of tin being in position, as described, the motion of the chain will carry it through the press, the punch D in the meantime cutting blanks in rapid succession therefrom. The form of the blank will vary according to the form of the punch and die, and the blanks, when cut, may be used for the top and bottom of cans, or forany other purpose to which they may be adapted.

What I claim as myinvention, and desire to secure by Letters Patent, is-

1. The press and feed-table, combined with the chain having an intermittent motion, the clamps consisting of fingers T V, secured to said chain, and the pressure bar for closing said clamps on the edge of the sheet of metal,

substantially as and for the purposes described.

2. The press and feed-table, combined with the chain mounted on wheels at opposite sides of the press, the clamps consisting of fingers T V, secured to said chain, the pressure-bar for closing said clamps, a gage on the feed-table for the sheets of metal, and mechanism, substantially as described, between the powershaft of the press and the shaft of one of Athe chain-wheels forimparting to the chain an intermittent motion, substantially as set forth.

3. The press and feed-table, combined with the chain having an intermittent motion, the clamps consisting of the fingers T V, secured to said chain, the ngers w, also secured to said chain, a gage on said feed-table, and the I pressure-bar for closing said clamps, substantially as and for the purposes set forth.

4. The press and feed-table, combined with the endless chain having an intermittent motion, the angle-plates Q, having fingers T, se

cured to said chain, the pivoted springngers V, the vertically-adjustable pressure-'bar a, for closing the fingers V, and the gage H, applied upon said table, substantially as and for the purposes set forth.

Signed at New York, in the county of New York and State of New York, this 25th day of November, A. D. 1887.

WILLIAM HIPPERLING.

Witnesses:

OHAs. C. GILL, W. A. C. MATTHIE.

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